Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Sentinel‐2 Accurately Estimated Wheat Yield in a Semi-arid Region Compared With Landsat‐8

Version 1 : Received: 26 September 2022 / Approved: 27 September 2022 / Online: 27 September 2022 (09:35:20 CEST)

A peer-reviewed article of this Preprint also exists.

Faqe Ibrahim, G.R.; Rasul, A.; Abdullah, H. Sentinel‐2 Accurately Estimated Wheat Yield in a Semi-Arid Region Compared with Landsat 8. International Journal of Remote Sensing 2023, 44, 4115–4136, doi:10.1080/01431161.2023.2232542. Faqe Ibrahim, G.R.; Rasul, A.; Abdullah, H. Sentinel‐2 Accurately Estimated Wheat Yield in a Semi-Arid Region Compared with Landsat 8. International Journal of Remote Sensing 2023, 44, 4115–4136, doi:10.1080/01431161.2023.2232542.

Abstract

Wheat and barley are among the primary food resources of the world population; therefore, their growth and observation are essential in farms to enhance food security worldwide. On top of that, careful observation of the product is essential to find solutions for the issues faced during their production and to reduce the impacts of weather changes. With the advancement of Remote Sensing technology, the observation and estimation process has increased. In this study, numbers of spectral vegetation indices was used along with canopy biophysical properties ( LAI ) and biochemical properties (chlorophyll), there calculated from (Landsat 8 and Sentinel-2) satellite data. The wheat and barley samples were collected before were be ready for harvest, and a relation with the vegetarian indices was established using the Multi-Linear Regression module, in which the equations used in predicting the harvest were developed and used to create a graph for expected harvest. The result indicated that there is a strong relationship between the vegetation indices of Sentinel-2 and Landsat images and the actual grain yield with R2 of 0.77 and 0.71, respectively. The results show that the strongest correlation is observed between the LAI data obtained from Sentinel data and cereal yield data, with an R2 0.68, and the highest correlation for the indices of Landsat images is observed in the NDWI with R2 0.59 and the lowest degree of error was in the root mean square error (RMSE) for the Sentinel-2 and Landsat 8 with 0.57 and 1.54. In addition, this study also showed that the least relationship for grain yield prediction was observed between the NDRI for Sentinel-2 (R2 0.1) and SAVI for Landsat image (R2 0.47).

Keywords

GEE; Landsat 8 OLI; Multi-linear regression; Remote Sensing; Vegetation indices; Wheat and barley

Subject

Environmental and Earth Sciences, Remote Sensing

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